Typikon, Typicon. (Greek: τυπικόν, typikon; pl. τυπικά, typika, lit. "following the order"; Slavonic: ѹставъ, ustav). Liturgical book which contains instructions about the order of the various Eastern Orthodox Christian church services and ceremonies in the form of a perpetual calendar. Those Eastern Catholic Churches that use the Byzantine rite also follow largely the same typica as their Orthodox counterparts, with minor variations.
The typikon arose within the monastic movements of the early Christian era as a way to regulate the life of a monastery. Two monastic centers have influenced the services of the Eastern Orthodox Church more than any other: the Holy Lavra of Saint Sabbas near Jerusalem and the Monastery of St John (Studium) in Constantinople.
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